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<div class="header">
  <div class="headertitle"><div class="title">cvbsbasecontroller.cpp</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - &lt;http://www.fabgl.com&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">  Copyright (c) 2019-2022 Fabrizio Di Vittorio.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">  All rights reserved.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"></span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">* Please contact fdivitto2013@gmail.com if you need a commercial license.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"></span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">* This library and related software is available under GPL v3.</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"></span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">  FabGL is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">  it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">  the Free Software Foundation, either version 3 of the License, or</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">  (at your option) any later version.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"></span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">  FabGL is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">  but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">  GNU General Public License for more details.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"></span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">  You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment">  along with FabGL.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> */</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="preprocessor">#include &lt;alloca.h&gt;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &lt;stdarg.h&gt;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#include &quot;freertos/FreeRTOS.h&quot;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#include &quot;freertos/task.h&quot;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span> </div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">#include &quot;<a class="code" href="fabutils_8h.html">fabutils.h</a>&quot;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#include &quot;devdrivers/cvbsgenerator.h&quot;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &quot;<a class="code" href="cvbsbasecontroller_8h.html">dispdrivers/cvbsbasecontroller.h</a>&quot;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span> </div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">#pragma GCC optimize (&quot;O2&quot;</span>)</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="keyword">namespace </span>fabgl {</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>CVBSBaseController::CVBSBaseController()</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>  : m_horizontalRate(1)</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>{</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>}</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="keywordtype">void</span> CVBSBaseController::init()</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>{</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>  CurrentVideoMode::set(VideoMode::CVBS);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>  m_primitiveProcessingSuspended  = 1;        <span class="comment">// &gt;0 suspended</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>  m_viewPorts[0] = m_viewPorts[1] = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>  m_viewPort                      = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>  m_viewPortVisible               = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>  m_viewPortMemoryPool            = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>}</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="keywordtype">void</span> CVBSBaseController::begin(gpio_num_t videoGPIO)</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>{</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>  init();</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>  m_CVBSGenerator.setVideoGPIO(videoGPIO);</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>}</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="keywordtype">void</span> CVBSBaseController::begin()</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>{</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>  begin(GPIO_NUM_25);</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>}</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span> </div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="keywordtype">void</span> CVBSBaseController::end()</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>{</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>  m_CVBSGenerator.stop();</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>}</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span> </div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="keywordtype">void</span> CVBSBaseController::freeViewPort()</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>{</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>  <span class="keywordflow">if</span> (m_viewPortMemoryPool) {</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>    <span class="keywordflow">for</span> (<span class="keyword">auto</span> poolPtr = m_viewPortMemoryPool; *poolPtr; ++poolPtr)</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>      heap_caps_free((<span class="keywordtype">void</span>*) *poolPtr);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>    heap_caps_free(m_viewPortMemoryPool);</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>    m_viewPortMemoryPool = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>  }</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 2; ++i)</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>    <span class="keywordflow">if</span> (m_viewPorts[i]) {</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>      heap_caps_free(m_viewPorts[i]);</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>      m_viewPorts[i] = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>    }</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>  m_viewPort = m_viewPortVisible = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>}</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span> </div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="comment">// Warning: After call to suspendBackgroundPrimitiveExecution() adding primitives may cause a deadlock.</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="comment">// To avoid this a call to &quot;processPrimitives()&quot; should be performed very often.</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="comment">// Can be nested</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="keywordtype">void</span> CVBSBaseController::suspendBackgroundPrimitiveExecution()</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>{</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>  ++m_primitiveProcessingSuspended;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>}</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span> </div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">// Resume after suspendBackgroundPrimitiveExecution()</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment">// Can be nested</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="keywordtype">void</span> CVBSBaseController::resumeBackgroundPrimitiveExecution()</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>{</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>  m_primitiveProcessingSuspended = tmax(0, m_primitiveProcessingSuspended - 1);</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span>}</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span> </div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="keywordtype">void</span> CVBSBaseController::setResolution(<span class="keywordtype">char</span> <span class="keyword">const</span> * modeline, <span class="keywordtype">int</span> viewPortWidth, <span class="keywordtype">int</span> viewPortHeight, <span class="keywordtype">bool</span> doubleBuffered)</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>{</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>  <span class="keyword">auto</span> params = CVBSGenerator::getParamsFromDesc(modeline);</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>  <span class="keywordflow">if</span> (params)</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>    setResolution(params, viewPortWidth, viewPortHeight);</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>}</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="keywordtype">void</span> CVBSBaseController::setResolution(CVBSParams <span class="keyword">const</span> * params, <span class="keywordtype">int</span> viewPortWidth, <span class="keywordtype">int</span> viewPortHeight, <span class="keywordtype">bool</span> doubleBuffered)</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>{</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>  <span class="comment">// just in case setResolution() was called before</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>  end();</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>  m_CVBSGenerator.setup(params);</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span> </div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>  m_viewPortWidth  = viewPortWidth &lt; 0 ? m_CVBSGenerator.visibleSamples() : viewPortWidth;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>  m_viewPortHeight = viewPortHeight &lt; 0 ? m_CVBSGenerator.visibleLines() * m_CVBSGenerator.params()-&gt;interlaceFactor : viewPortHeight;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span> </div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>  <span class="comment">// reduce viewport if more than one sample per color is required</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>  m_viewPortWidth /= m_horizontalRate;</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>  <span class="comment">// inform base class about screen size</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>  setScreenSize(m_viewPortWidth, m_viewPortHeight);</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>  setDoubleBuffered(doubleBuffered);</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span>  <span class="comment">// adjust view port size if necessary</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>  checkViewPortSize();</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span> </div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>  <span class="comment">// allocate the viewport</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>  allocateViewPort();</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span> </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>  <span class="comment">// adjust again view port size if necessary</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>  checkViewPortSize();</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>  resetPaintState();</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>}</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="keywordtype">void</span> CVBSBaseController::run()</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>{</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>  m_CVBSGenerator.run();</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>}</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span> </div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span> </div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span><span class="comment">// this method may adjust m_viewPortHeight to the actual number of allocated rows.</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span><span class="comment">// to reduce memory allocation overhead try to allocate the minimum number of blocks.</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="keywordtype">void</span> CVBSBaseController::allocateViewPort(uint32_t allocCaps, <span class="keywordtype">int</span> rowlen)</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>{</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>  <span class="keywordtype">int</span> linesCount[<a class="code hl_define" href="fabglconf_8h_a1ab4da26b781d3790348f83fe5c88f70.html#a1ab4da26b781d3790348f83fe5c88f70">FABGLIB_VIEWPORT_MEMORY_POOL_COUNT</a>]; <span class="comment">// where store number of lines for each pool</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>  <span class="keywordtype">int</span> poolsCount = 0; <span class="comment">// number of allocated pools</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>  <span class="keywordtype">int</span> remainingLines = m_viewPortHeight;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>  m_viewPortHeight = 0; <span class="comment">// m_viewPortHeight needs to be recalculated</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>  <span class="keywordflow">if</span> (isDoubleBuffered())</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>    remainingLines *= 2;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span> </div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>  <span class="comment">// allocate pools</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>  m_viewPortMemoryPool = (uint8_t * *) heap_caps_malloc(<span class="keyword">sizeof</span>(uint8_t*) * (<a class="code hl_define" href="fabglconf_8h_a1ab4da26b781d3790348f83fe5c88f70.html#a1ab4da26b781d3790348f83fe5c88f70">FABGLIB_VIEWPORT_MEMORY_POOL_COUNT</a> + 1), MALLOC_CAP_32BIT);</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>  <span class="keywordflow">while</span> (remainingLines &gt; 0 &amp;&amp; poolsCount &lt; <a class="code hl_define" href="fabglconf_8h_a1ab4da26b781d3790348f83fe5c88f70.html#a1ab4da26b781d3790348f83fe5c88f70">FABGLIB_VIEWPORT_MEMORY_POOL_COUNT</a>) {</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>    <span class="keywordtype">int</span> largestBlock = heap_caps_get_largest_free_block(allocCaps);</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>    <span class="keywordflow">if</span> (largestBlock &lt; <a class="code hl_define" href="fabglconf_8h_addff8695eb7dc9eee835e709fac9b808.html#addff8695eb7dc9eee835e709fac9b808">FABGLIB_MINFREELARGESTBLOCK</a>)</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>    linesCount[poolsCount] = tmax(1, tmin(remainingLines, (largestBlock - <a class="code hl_define" href="fabglconf_8h_addff8695eb7dc9eee835e709fac9b808.html#addff8695eb7dc9eee835e709fac9b808">FABGLIB_MINFREELARGESTBLOCK</a>) / rowlen));</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>    m_viewPortMemoryPool[poolsCount] = (uint8_t*) heap_caps_malloc(linesCount[poolsCount] * rowlen, allocCaps);</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>    <span class="keywordflow">if</span> (m_viewPortMemoryPool[poolsCount] == <span class="keyword">nullptr</span>)</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>    remainingLines -= linesCount[poolsCount];</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>    m_viewPortHeight += linesCount[poolsCount];</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>    ++poolsCount;</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>  }</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>  m_viewPortMemoryPool[poolsCount] = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span> </div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>  <span class="comment">// fill m_viewPort[] with line pointers</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>  <span class="keywordflow">if</span> (isDoubleBuffered()) {</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>    m_viewPortHeight /= 2;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>    m_viewPortVisible = m_viewPorts[1] = (<span class="keyword">volatile</span> uint8_t * *) heap_caps_malloc(<span class="keyword">sizeof</span>(uint8_t*) * m_viewPortHeight, MALLOC_CAP_32BIT | MALLOC_CAP_INTERNAL);</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  }</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>  m_viewPort = m_viewPorts[0] = (<span class="keyword">volatile</span> uint8_t * *) heap_caps_malloc(<span class="keyword">sizeof</span>(uint8_t*) * m_viewPortHeight, MALLOC_CAP_32BIT | MALLOC_CAP_INTERNAL);</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>  <span class="keywordflow">if</span> (!isDoubleBuffered())</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>    m_viewPortVisible = m_viewPort;</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> p = 0, l = 0; p &lt; poolsCount; ++p) {</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>    uint8_t * pool = m_viewPortMemoryPool[p];</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; linesCount[p]; ++i) {</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>      <span class="keywordflow">if</span> (l + i &lt; m_viewPortHeight)</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>        m_viewPort[l + i] = pool;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>        m_viewPortVisible[l + i - m_viewPortHeight] = pool; <span class="comment">// set only when double buffered is enabled</span></div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>      pool += rowlen;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>    }</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>    l += linesCount[p];</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>  }</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>}</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span> </div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span> </div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span><span class="keywordtype">void</span> IRAM_ATTR CVBSBaseController::swapBuffers()</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>{</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>  tswap(m_viewPort, m_viewPortVisible);</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>}</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span> </div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="keywordtype">bool</span> CVBSBaseController::suspendDoubleBuffering(<span class="keywordtype">bool</span> value)</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>{</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>  <span class="keyword">auto</span> prevValue = BitmappedDisplayController::suspendDoubleBuffering(value);</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>  <span class="keywordflow">if</span> (prevValue != value &amp;&amp; isDoubleBuffered()) {</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>    <span class="keywordflow">if</span> (value) {</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>      m_viewPorts[0]    = m_viewPort;</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>      m_viewPorts[1]    = m_viewPortVisible;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>      m_viewPort        = m_viewPortVisible;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span>      m_viewPort        = m_viewPorts[0];</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>      m_viewPortVisible = m_viewPorts[1];</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>    }</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>  }</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>  <span class="keywordflow">return</span> prevValue;</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>}</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span> </div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span> </div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span>} <span class="comment">// end of namespace</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span> </div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span> </div>
<div class="ttc" id="acvbsbasecontroller_8h_html"><div class="ttname"><a href="cvbsbasecontroller_8h.html">cvbsbasecontroller.h</a></div><div class="ttdoc">This file contains fabgl::CVBSBaseController definition.</div></div>
<div class="ttc" id="afabglconf_8h_a1ab4da26b781d3790348f83fe5c88f70_html_a1ab4da26b781d3790348f83fe5c88f70"><div class="ttname"><a href="fabglconf_8h_a1ab4da26b781d3790348f83fe5c88f70.html#a1ab4da26b781d3790348f83fe5c88f70">FABGLIB_VIEWPORT_MEMORY_POOL_COUNT</a></div><div class="ttdeci">#define FABGLIB_VIEWPORT_MEMORY_POOL_COUNT</div><div class="ttdef"><b>Definition:</b> <a href="fabglconf_8h_source.html#l00126">fabglconf.h:126</a></div></div>
<div class="ttc" id="afabglconf_8h_addff8695eb7dc9eee835e709fac9b808_html_addff8695eb7dc9eee835e709fac9b808"><div class="ttname"><a href="fabglconf_8h_addff8695eb7dc9eee835e709fac9b808.html#addff8695eb7dc9eee835e709fac9b808">FABGLIB_MINFREELARGESTBLOCK</a></div><div class="ttdeci">#define FABGLIB_MINFREELARGESTBLOCK</div><div class="ttdef"><b>Definition:</b> <a href="fabglconf_8h_source.html#l00130">fabglconf.h:130</a></div></div>
<div class="ttc" id="afabutils_8h_html"><div class="ttname"><a href="fabutils_8h.html">fabutils.h</a></div><div class="ttdoc">This file contains some utility classes and functions.</div></div>
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